Transcription

1 Online Courses for High School CS Teachers Mark Guzdial School of Interactive Computing Georgia Tech

2 What s needed for successful on-line courses to achieve CS10K? How do we teach thousands of high school teachers, possibly with little mathematics or computer science background? What kind of pedagogy will fit into the lives of in-service high school teachers? How do we create sufficient, high-quality on-line materials to lead to successful CS learning at a distance? What will motivate high school teachers to be motivated to take classes, to be engaged with the content, and to sustain their interest? What do teachers need to develop into successful computer science teachers?

4 1. UK Open University A university that accepts all students, with tens of thousands taking classes at any time. The quality on par with many brick-and-mortar institutions. OU completion rate 56.5% (1995). Open University of the Netherlands: 30.8% Recent Stanford on-line AI class: 18%

5 Remote-classroom vs. Correspondence Model The OU depends on a correspondence school model: Create high-quality, engaging materials. Design expecting students to study on their own. Alternative model: Remote classroom. Record the classroom (e.g., lectures) as they happen, then make them available for replaying.

6 Differences: Costs and Engagement Ratio of fixed costs to variable costs in Open U is 2000:1, compared to 8:1 in traditional universities. Rely heavily on books, because the quality can be maintained without increasing costs.

7 Even today Through six themed teaching blocks you ll cover the key aspects of modern computer technology. Each block includes a blend of printed and online text, pictures, animations and practical activities. Specially recorded audio and video materials accompany the teaching material. These include interviews with leading researchers, experts, companies and users from a wide range of countries, including the USA, Nepal, Iceland and Switzerland.

8 2. Challenge of CS pedagogy How do adult professionals learn CS? What is it like for adult professionals in on-line CS classes?

10 10 Where are they getting their CS knowledge? Mostly on-line: FAQs and other documentation Books (when applicable) Lots of examples and networking. Not so much classes Dorn & Guzdial, CHI 2010

11 What do software engineers do? Answer: The Boring Stuff. Dorn & Guzdial, ICER 2010 P2: I was able to take different samples from different places and instead of just being let's say an MIS major, or computer science major, you know it's you're not going to be front-end anything with computer science. You're going to be back-end everything. P4: I think as a front-end developer, you focus more on the design and the usability, and you're focusing more on the audience. And then on the back-end I think you're focused on more, these are like the software developers. And they're programming something, and they don't really see what it's gonna look like; they're just making it work.

12 Who is in CS? Like Yardi and Bruckman (ICER 2007), participants held negative stereotypes of those in CS: P2: I went to a meeting for some kind of programmers, something or other. And they were OLD, and they were nerdy, and they were boring! And I'm like, this is not my personality. Like I can't work with people like that. And they worked at like IBM, or places like that. They've been doing, they were working with Pascal. And I didn t I couldn't see myself in that lifestyle for that long. P5: I don't know a whole ton of programmers, but the ones I know, they enjoy seeing them type up all these numbers and stuff and what it makes things do. Um, whereas I just do it, to get it done and to get paid. To be honest. The design aspect is what really interests me a lot more. 12

13 Why don t they take CS classes? P7: I started out in computer science, but didn't like it at all. The fact that I wasn't learning anything new. I took an intro to programming course, and then I talked to some other people in the program and it was all repetition and I guess there wasn't any really new. So you weren't really learning any concepts. You were learning the languages, and I didn't like that at all. So that's why I left Do we just teach languages? Why don t they see the concepts? 13

14 They want to know more P1: So I mean technology changes. So what I am ideally looking to focus on are like the foundation. The things that change less, you know what I'm saying? Like computer science um, theory, you know I'm saying I mean? That kind of like, it's applicable to what I do, and it's not so constantly shifting. P10: I was the kind of programmer that could make stuff work. But I didn't really have solid understandings. At one point I picked up a book on design patterns and I looked at it, and I was like that's really, that's really interesting So I was like well I wanna keep doing that because it made me a better programmer. And it was more fun to program, and it was more thought provoking. 14

15 How do we teach working high school teachers? Study of adult/professional students in CS classes. They don t have the time to spend hours in front of the IDE. Lacking background, e.g., in mathematics. They get stymied by small errors.

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17 What teachers want and what they find Quote from Computinged.Wordpress.com: One word: Summer. I have taken several courses in order to be ready to teach CS 1, which I am teaching this year. First, I went through a textbook. Then I took a six-week online course. Then, I basically took my own course. The sixweek online course was a disaster for me. The content was good, but I had no time to complete all the assignments. Those were all first-level courses and now that I'm ready for CS 2 essentially, it's harder to find things. Everything I see is geared toward the complete novice. I've looked an online courses through the community colleges, but they often don't offer what I want in the summer, which is when I have time. And places that do offer good courses in the summer are ridiculously expensive. I'm not going to pay $3k to take a course, even if it would be "good for me". One thing I've done that's been successful is the weekend workshop. I've done a couple of these to pick up, for example, Arduino programming or Scratch. But these are usually focused around a particular technology, and geared toward beginners. If you have time to continue playing around with what you've learned, then it's great. I took both of the workshops in the summer. See? Summer!

18 What are your issues and solutions for on-line CS classes for teachers?

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20 What are your issues and solutions for What are your issues and solutions for on-line CS classes for teachers? :20:51 18/20 CE21-OnlineCourses-Guzdial-2.pdf (18/20)

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